Hindi–Urdu transliteration

Hindustani (also known as Hindi–Urdu; Devanagari: हिन्दी-उर्दू, Nastaliq: ہندی-اردو) is the lingua franca of modern-day northern India and Pakistan (together classically known as Hindustan). Hindi is officially registered in India as a standard written using the Devanagari script, and Urdu is officially registered in Pakistan as a standard written using an extended Perso-Arabic script.

Hindi–Urdu transliteration (or Hindustani transliteration) is the process of converting text written in Devanagari script (used for Hindi) into Perso-Arabic script (used for Urdu), or vice versa. It focuses on representing the shared phonemes between those writing systems or using other writing systems, primarily Latin alphabet, in their stead.